Transparency

All code, data, and assumptions are publicly available and auditable.

Reproducibility

Calibrated to ENTSO-E TYNDP 2024 reference data and methodology. Any stakeholder can re-run or verify TYNDP scenarios independently via Snakemake.

Automation

The entire modelling process runs automatically, from data preparation to final results and visualisations.

Collaboration

A shared, open codebase makes cross-organisation collaboration far easier.

Reusable

The same methodology can be applied to regional data beyond Europe.

Community-driven

Benefits from continuous developments to PyPSA-Eur by a broad community of researchers and practitioners.

Open-TYNDP is a research and innovation project developed by Open Energy Transition in coordination with ENTSO-E, and funded by Breakthrough Energy, QCF, and other philanthropies, with previous support from Google.org. The project explores how open-source energy models can complement and strengthen existing TYNDP workflows through transparent and reproducible modelling approaches by implementing Scenario Building and Cost-Benefit Analysis aligned with the TYNDP 2024 reference data and methodologies. Open Energy Transition is actively developing Open-TYNDP and is currently working on implementing the TYNDP 2026 data and methodology.

Who is it for?

  • TSO planners — open-source alternative for grid investment scenarios and sensitivity analysis
  • ENTSO-E leadership — credible, independent benchmarking of TYNDP results
  • Researchers & policymakers — full access to a pan-European model calibrated to official TYNDP 2024 data
  • Grid planners beyond Europe — a reusable framework for transmission planning in other regions and continents

What can you do with Open-TYNDP?

  • Independently reproduce and examine the official TYNDP 2024 National Trends scenario
  • Test custom scenarios (e.g. alternative demand or RES assumptions) without starting from scratch
  • Directly compare open-source model results with ENTSO-E outputs in a transparent framework
  • Build on a common, community-maintained European planning model
  • Collaborate more easily across organisations and institutions using a shared, open codebase
  • Benefit from the continuous developments and features of an open-source framework, driven by a broad community of researchers and practitioners
  • Get involved by contributing to the codebase, documentation, and community discussions

Get started

Full documentation with installation instructions, configuration, and workflow descriptions.

Documentation GitHub

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